package com.itheima.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.itheima.anno.Log;
import com.itheima.mapper.EmpMapper;
import com.itheima.pojo.Emp;
import com.itheima.pojo.PageBean;
import com.itheima.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmpServiceImpl implements EmpService {
    @Autowired
    private EmpMapper empMapper;


    @Override
    public PageBean page(Integer page, Integer pageSize, String name, Short gender, LocalDate begin, LocalDate end) {
//        //1.获取总记录数
//        Long total = empMapper.count();
//        //2.获取分页查询结果列表
//        Integer start = (page-1)*pageSize;
//        List<Emp> empList = empMapper.page(start, pageSize);
//        //3.封装PageBean对象
//        PageBean pageBean = new PageBean(total, empList);


        //***使用pagehelper插件***
        //1.设置分页参数
        PageHelper.startPage(page,pageSize);
        //2.执行查询
        List<Emp> empList = empMapper.list(name,gender,begin,end);
        Page<Emp> p = (Page<Emp>) empList;
        //3.封装PageBean对象
        PageBean pageBean = new PageBean(p.getTotal(), p.getResult());
        return pageBean;
    }

    //删除员工
    @Override
    @Log
    public void delete(List<Integer> ids) {
        empMapper.delete(ids);
    }
    //新增员工
    @Override
    @Log
    public void save(Emp emp) {
        emp.setCreateTime(LocalDateTime.now());
        emp.setUpdateTime(LocalDateTime.now());
        empMapper.insert(emp);
    }
    //根据id查询
    @Override
    public Emp selectById(Integer id) {
        Emp emp = empMapper.selectById(id);
        return emp;
    }

    //修改员工信息
    @Override
    @Log
    public void update(Emp emp) {
        emp.setUpdateTime(LocalDateTime.now());
        empMapper.update(emp);
    }
    //用户登录
    @Override
    public Emp login(Emp emp) {
        Emp loginEmp = empMapper.getByUsernameAndPassword(emp);
        return loginEmp;
    }
}
